This meta-analysis synthesizes quantitative findings of the gender differences in moral sensitivity retrieved from 19 primary studies. We found the average effect size of 0.25, favoring women, with a standard deviation of 0.14. The variation in the observed effect sizes could not be attributed to differences in participants' educational level, the utilized measure of moral sensitivity, or the publication format in which the study was reported. This suggests that gender differences in moral sensitivity are consistent across different levels of participants' (...) education regardless of the instrument used to assess moral sensitivity or the format in which the research was reported. (shrink)